| Cu~(2+)·Cd~(2+)胁迫对番茄幼苗生长及过氧化物酶活性的影响 |
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| 引用本文： | 赵迎春.Cu~(2+)·Cd~(2+)胁迫对番茄幼苗生长及过氧化物酶活性的影响[J].安徽农业科学,2008,36(22). |
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| 作者姓名： | 赵迎春 |
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| 作者单位： | 扬州环境资源职业技术学院园林园艺系,江苏扬州,225000 |
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| 摘 要： | 利用不同浓度Cu2+、Cd2+处理2个番茄品种的幼苗,研究重金属离子对番茄苗期生长和叶片过氧化物酶(POD)活性的影响,比较Cu2+、Cd2+两种重金属离子对番茄幼苗的毒性差异及2个番茄品种之间的差异。试验结果表明,Cu2+、Cd2+在较低浓度时能够促进番茄幼苗生长,提高POD活性;而随着浓度提高抑制作用明显。且Cd2+的影响比Cu2+明显,2个不同番茄品种间也存在差异。
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| 关 键 词： | Cu2+ Cd2+ 番茄幼苗 POD |
Effects of Cu2+ and Cd2+ Stress on Growth and POD Activity of Tomato Seedling |
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| ZHAO Yingchun.Effects of Cu2+ and Cd2+ Stress on Growth and POD Activity of Tomato Seedling[J].Journal of Anhui Agricultural Sciences,2008,36(22). |
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| Authors: | ZHAO Yingchun |
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| Abstract: | The growth situation and peroxidase(POD) of seedlings of two tomato cultivars were investigated under the stress of different concentrations of Cu2 and Cd2 .The toxicity differences of Cu2 and Cd2 to tomato seedlings and the corresponding differences between two tomato cultivars were observed through the stress trial with the above two heavy metal ions.The results showed that low concentration of Cu2 and Cd2 could promote the growth and could enhance the POD activity of tomato seedlings,while high concentration Cu2 and Cd2 could inhibit seedling growth and POD activity of tomato seedlings.Cd2 functioned more obviously than that of Cu2 ,two tomato cultivars also presented difference in response to heavy metal stress. |
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| Keywords: | Cu2 Cd2 POD |
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